Home / 1,990.89-2,986.11-530.01

Finding the Fourth Proportional to 1,990.89, 2,986.11 and 530.01

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Solution

The fourth proportional to 1,990.89, 2,986.11 and 530.01 is: 794.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.89 : 2,986.11 = 530.01 : x
  2. Step 2: Convert to fraction form
    1,990.89/2,986.11 = 530.01/x
  3. Step 3: Cross multiply
    1,990.89x = 2,986.11 × 530.01
  4. Step 4: Simplify right side
    1,990.89x = 1,582,668.16
  5. Step 5: Solve for x
    x = 1,582,668.16/1,990.89
  6. Step 6: Final answer
    x = 794.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.